Lock



Allg 13, 1929. G. w. ALDEEN 1,724,448

LOCK

Filed May 9, 1927 mortise.

Patented Aug. 13, 1929. i

'1,724,448 UNITED Ysirxrlas@ PATENT oF'Fllca.

GEDOR W. ALDEEN, 0F ROCKFORD, ILLINOIS,

ASSIGNOR 'IO NATIONAL LOCK` CO., OF

\ ROCKFORD, ILLINOIS, A CORPORATION OF DELAWARE.

Locx.

application fuea may s, 1927. serial No. 189,817.

This invention relates to a lock of the type whose case is mortised into the edge ofva drawer and whose key cylinder 1s removably insel-table irto the case through a hole cut in the drawer and intersecting the One of the objects of this invention is to provide ,a lock having a removable key cylinder, the cylinder also having a knob by means ofwhich the bolt may -be actuated, the cylinder therefore being heldrotatably in the case.

Another object of this invention is to pro-- vide a rotatable key cylinder which carriesL a rotatable key guide, the cylinder being insertable into a lock case and automatically' locke'd in operative position.`

Another object of this Iinvention is to.

"provide a key cylinder rotatably carrying a key guide,'insertable into a lock case, and automatically locked 4in the case when inserted, to ether with means "for unlocki the cyliner to permit its withdrawal from the case.

. Another object of this invention is to provide a lock Whose case may be mortised into a drawer wall and whose keycylinder is insertable into the case' through a hole perpendicular to the mortise, the key cylinderl having a knob for actuating the bolt, and adapted when inserted into the case tov engage bolt 'actuating means, and at the same time being releasably locked in a ro` tatable position in the case. l

Other inherent objects, advantages and capabilitiesof this invention will'later become apparent. f

eferring to the drawings, in which a preferred embodiment of the invention is shown for the purpose of illustrating the invention,

Fig. lis a front elevation of the lock case with thecover removed and with the cylinder in section and showing the mechanism in the wall cylinder as detached from the case,

of the lock in its unlocked position,

'Fig 2 is a vertical,central section showing the knob and case as they are mounted of a drawer, Fig. 3 is a vertical central section on the line 3-3 of Fig. 2, l Fig. 4 is a horizontal sectiontaken on the line 4 4 of Fig. 3, Fig. 5 is an elevation of the knob and key whereas Fig. 6 is an end elevation of the knob and cylinder shown in Fig. 5, and

Fig. 7 is an elevation of the bolt actuator alone.

Referring now to the drawing, a lo'ck` case generally indicated as 11 is insertc'alin` to aV mortise ,as shown in Fig. 2 in the wall 12 of such as a desk drawer. WhenV inserted to its full depth, the face plate 13 is then secured to the top surface of the draw-- er by means -of screws extending through the openings 14 in the face plate.

' The. bolt 15 extends through the"v face I plate and is adapted to be reciprocated by Y the knob 16.

The bolt is provided with an extension 17 which slides vwithin the .case against the back wall and is provided with .a notch 18 into which extends the the bolt actuator 21; The about a horizontal axis. An extension 22 on, the actuator rotatably fits into a hole 23'; the rear face 24 of the actuator then bears against the rear wall of the case and slides over it as the actuator is oscillated about its horizontal axis. It will be under# Stood vthat so long as the projection 19 is engaged in the notch 18 in the bolt. any

actuator oscillates oscillation .of the actuator will cause the bolt i to 4be withdrawn into or extendedfrom the case. The preferred embodiment of lthis invention discloses a lock in which the bolt 1s normally urged to remain in extended position by means of a spring 25 pivoted on post 26 and bearing against a surface of a slot 20 in the head of the bolt. N The bolt is reciprocated by the oscillat1on of the bolt actuator while the actuator itself isoscillated by the rotation of the keyI cylinder. This latter result is accomplished by I neans ofthedogs v27 on the inner extremity of the barrel 28 which extend into and engage withl the slots 29 in the actuator. The enl key cylinder ,is formed integrally with the barrel portion 28 and is` the only part which extends out beyond the outer surface ofthe Wall of the drawer, as shown in Fig. .4. 11s portion 16 constitutes 'a knob which may be conveniently grasped for `rotating thekey cylinder and bolt actuator to unlock the drawer and for pulling the drawer out after it is unlocked.

-arged portion 16 of the lthe actuator has an axial bearing on the case, the key cylinder is lthereby given a second point of support for its rotational movement in addition to its direct bearing on the frontcover of the case. ln consequence, the key cylindei` and key guide 33 will always be held perfectly horizontal.

If the key is allowed `to remain in the key cylinder while the 'lock is unlocked, it too ,will be held perfectly horizontal, will not interfere with the rotation of the cylinder, and will present a neat appearance.

Thekey guide 33 is carried centrally by the keycylinder and is held therein rotative relatively to the cylinder by means of a disk 34 integral with the key guide and seated in the annular recess 35 in the outer end of the knob. The inner end of the key guide has a reduced portion 36 which fits into a central opening 37 in the actuator and a longitudinal slot 38 is provided in the vkey guide and ext-ends from the center line of the key guide outwardly to its surface, thus acting as a suitable guide for the key which may be inserted through the cylinder for purposes hereinafter described.

The means of locking lthe bolt in extended position is provided for as follows. A bolt locking slide 39 lies next to `the bolt extension 17 and reciprocates up and down in the case on the face of said bolt extension. A lug 41 formed integrally with the rear wall of the case guides the reciprocatory motion of the bolt extension and the bolt locking slide. 'Another lug 42 which is likewise mounted on the rear wall .of the case guides the vupper portion of the bolt 'locking slide in its reciprocatory motion. The bolt locking. slide is proyided with a notch 43 into which a projection on the key may extend for the purpose of reciprocating the bolt locking slide from locked to unlocked posivtion and back again.

key which cooperate with it are so designed' This notch and the that a projection on the vkey may rotate into' the notch, cause the slide to move upi or v down provided the slide itself is not l locked, `and at the limit of travel ofthe slide the key projection will thereafter rol tate completely out of -the notch leaving lthe slide at its uppermost position as shown in Fig. 3 or in its lowermost position, that is, when the bolt is unlocked for free movementl as illustrated in Fig. 1. As shown in Fig. 3, the` upper left hand corner 44 of the bolt locking slide abuts against the i lower right hand corner ofthe bolt and thus holds the bolt from being withdrawn slide and extending toward the meente is in its lowermost position, the bolt may be freely reciprocated. llt should be understood that the bolt itself is urged to extended position by means of the spring but may be reciprocated back and forth by the oscillation of the actuator, the actuator being oscillated by theknob. The locking slide itself is moved-tb its locked or to its bolt locking position or bolt unlocking position by means of a projection on a key.

The locking `slide `itself is locked in its uppermost position by a cooperation existing between a lug 45 formed on the locking front of the case, the inner tumbler 46 and a middle tumbler 47 .which are pivoted on the same post 48, each being urged .toward the center of bear against the inner Wall of the case. These two tumblers are suitably slotted as illustrated to permit the lug 45 to reciprocate longitudinally in their slots whenever the tumblers are pressed sufficiently away from the center of the case by means of key projections which cooperate with each of vthe case by means of springs 49 and 51 which" them. As illustrated in' Figs. 1 and 3, these tumblers cooperate with the lug 45 to hold the locking slide either in unlocked or locked position. As the key is rotated into the notch 43 of the lock slide, it simultaneously actuates the two tumblers to disengage them from the lug 45 in order that thekey may then move the lock slide away from the position in which the tumblers have been holdin 'it locked.

he manner of actuating the bolt, locking the bolt in extended position and' all of the necessary mechanism for doing these several things has been described above. There nOw remains to be described the means for locking the key cylinder against separation from t-he case yetY permitting it toi be rotated for the purpose of .reciprocating the bolt. A cylinder locking tumbler 52 is pivoted on the post 48 also and has a spring 53 which urges it toward the center of the case. The travel of this outermost tumbler 52 toward the center of the case is limited by the abutment of its extension 54 on the lug 45. No matter whether the lock slide and its lug 45 are irr upper or the lower position, this engagement will occur and will prevent the tumbler from moving too far toward the center of the case. A dog 55 extends toward the center ofthe case and loosely engages with an arcuate notch 56 inthe barrel of the key cylinder.

This dog and the cylinder are so designed that whenever the cylinder is thrust into the case, the end of the dog will ride along the cam surface 57 on the barrel 28 causing the third tumbler 52 carrying this dogl to be pressed back somewhat unt-il the cylinder is pushed all the way into ,the case with the lugs 27 enga-ging with the actuator,.whereupon into the case.- Hence when the locking slide this dog 55 will then spring into thev notch 56 and thereafter prevent withdrawal of the key cylinder from thel case until b-y some means the dog is later disengaged from this notch.

Provision for the release of this dog from the notch in the key cylinder is made by the designing of a key 58 which may be inserted in the usual manner through the-key guide and which when rotated will strike the end of the dog 55 land push it back away from the center of the case past the corner 59 thereby permitting the cylinder to be Withdrawn from the case. The key 58 is adapted to push the dog out of engagement with the key'cylinder notch but the ordinary key used for the actuation of the tumblers and lock slide is provided with a recess so that during its rotation it Will always miss this dog. The arcuate slot 56 in the barrel 28 is `long enough to permit a free rotation of the knob without the end of the dog 55 touching the closed end of this. notch. The bolt in the lock illustrated is moved between the limits of its reciprocatory travel by less than 90 of rotation of the knob, hence the notch 56 need not be ver long.

Loo ing at Fig. 3 where the locking mechanism is in bolt locking position, clockwise rotation of the key will unlock rthe tumblers `and move the bolt locking slide 39 to its lower position. Likewise a, short clockwise motion of the knob after the bolt is unlocked will cause the bolt to be retracted within the case. Counter-clockwise rotation of the lock- Iing key will push the tumblers 46 and 47 aside to allow the lkey to move the'bolt locking slide from the position shown in Fig. 1 to the position shown in Fig. 3. In this latter position the knob cannot be rotated and the bolt is locked in ext-ended position. The cylinder releasing key -58 will unlock the vknob locking tumbler 52 and permit the removal of the knob whetherv or not the bolt at the time is locked or unlocked.

It should be understood that the scope of this invention is not ylimited to the structure illustrated and described herewith as it also comprehends various modifications which may differ in construction but not in spirit from the preferred embodiment herewith illustrated. f Y

I-Iavingv shown and described the invention, I claim:

1. In a lock', a case, a bolt, akey cylinder extending into said case, means operatively connected with, the key cylinder for lactuating the bolt and means disconnectably engageable with said cylinder for locking the cylinder in operative position.-

2. In a lock, a case, a bolt, a rotatable key cylinder adapted to extend into said case,,

.nected with the key cylinder for actuating the bolt and means extending into said cylinder -for normally engaging said cylinder to hold the cylinder in operative position.

4. In a lock, a case, a bolt, a bolt actuating means, a key cylinder extending into the case and adapted to engage andmove said means to actuate the bolt, and means for lockingly engaging said cylinder when it is thrust into the case to hold it in operative position.

5. In a lock, a bolt, bolt actuating means including a knob, and key-released means for locking said knob in operative connection with the bolt.

6. In a lock, the combination of a lock case, a key cylinder rotatably and detachvably connected with said case, a key guide rotatably mounted in said cylinder and means for releasably locking the cylinder in rotatable position.

7. In a lock, a reciprocable bolt, a bolt locking'slide, a bolt actuator, means for locking said slide in two positions, a key cylinder operatively engaged with said actuator, and a tumbler normally engaged with said cylinder to hold the cylinder and actuat'or in engagement.

8. In a lock, the combinationof a lock case, a bolt, a rotatable bolt actuator having an axial bearing on said case, and a key cylinder detachably connectible with said actuator. Y.

9. In a lock, the combination of a' lock case, a bolt, a boltwactuator supported'on said case, and a key cylinder detachably connectible with the actuator for operating the actuating the bolt, and means for releasablylocking said cylinder portion against `separation from the case but in movable relation to said-case.

12. In a lock, the combination of a lock case, a bolt, a rotatable key cylinder having a. portion extending into said case, means operated `by movement of the cylinder for actuating the bolt, 'and means for releasably locking said portion against separation from the case but in rotatable relation to said case.

13. In a lock, a"case, a bolt, a rotatable it l mossos key cylinder-. moans opoosvoy oomnoobod and moons for roleosably looking the key cylinder m opom'nwe position m the coso.

M, n a ock, sd owe? boli, u rototaolo I cylinder in operativo position in the cose, said. cylinder locking means boing adapted l0 ico be' umlookod when th bolt is in locked and s im umockod position.

lo Witness of the omgoingfl #bmx my signwbure. f

@Eloois W mmm; 

